ConnectX-2 Ethernet Card User Manual
Rev 1.6
Mellanox Technologies
31
The “Usage: openibd {start|stop|restart|status}” command to modify this file and thereby control
the drivers.
Ethernet Driver Usage and Configuration
To assign an IP address to the interface run:
#> ifconfig eth<n> <ip>
where 'n' is the OS assigned interface number.
• To check driver and device information run:
#> ethtool -i eth<n>
Example:
#> ethtool -i eth2
driver: mlx4_en (MT_04A0140005)
version: 1.5.1 (March 2010)
firmware-version: 2.7.000
bus-info: 0000:13:00.0
• The mlx4_en parameters can be found under /sys/module/mlx4_en (or /sys/module/mlx4_en/
parameters, depending on the OS) and can be listed using the command:
#> modinfo mlx4_en
To set non-default values to module parameters, the following line should be added to the file/etc/
modprobe.conf:
"options mlx4_en <param_name>=<value> <param_name>=<value> ..."
Ethernet Network Tuning
To improve network perfomance by tuning your network see the Mellanox Performance Tuning
Guide located at:
http://www.mellanox.com/related-docs/prod_software/
Performance_Tuning_Guide_for_Mellanox_Network_Adapters_rev_1_0.pdf
4.4
Cables and Modules
The SFP+ port can connect to the Ethernet through both direct attach cables and stand alone trans-
ceivers with optical cables. SFP+ transceiver modules are available for both SR and LR protocols.
See
www.mellanox.com
=> Products => Cables for certified and approved cable recommenda-
tions.
4.4.1 Optical modules for SFP+
SFP+ transceiver modules can be used to connect fiber optic cables to the cards greatly increasing
the cable reach.
